DataVXACS Applied Materials & InterfacesPaper
journal article·2015-09-02

Fabrication of Polystyrene/ZnO Micronano Hierarchical Structure Applied for Light Extraction of Light-Emitting Devices

Peng Mao, Amulya krishna Mahapatra, Jing Chen, Minrui Chen, Guanghou Wang, Min Han

ACS Applied Materials & Interfaces· Volume 7· Issue 34
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Source abstract

Abstract

Polystyrene(PS)/ZnO micronano hierarchical structures were fabricated on a flat surface by depositing ZnO nanoparticles from a cluster beam at oblique incidence on the surface predeposited with PS microspheres. The hierarchical structure was composed of submicron-sized PS particle layers covered with dense films of columnar ZnO nanoparticle piles separated with nanoscale pores. It was demonstrated that the cooperative effect that combines the microlens function of the PS microspheres and the enhanced Rayleigh scattering of the ZnO nanoparticle porous layers can be used to greatly reduce the total internal reflection at the medium-air interface. The PS/ZnO hierarchical structures were fabricated on the surface of GaN-based light-emitting diode (LED) chips to enhance the light-extraction efficiency. A 77.7% improvement on the light-output power was realized, which was much greater than that obtained with the PS microstructures alone.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: GaN-based semiconductor devices and materials · ZnO doping and properties · Advanced Sensor and Energy Harvesting Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing 210093, China

Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, China

Funding

Priority Academic Program Development of Jiangsu Higher Education Institutions · Jiangsu Province Innovation Fund for Technology Based Firms · National Natural Science Foundation of China · Ministry of Science and Technology of the People's Republic of China · Graduate School, Nanjing University

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